Atmel – Processors provide more secure, lower-power performance in access-control systems

Atmel’s SAMA5D2 series of MCUs provides a highly integrated system for implementing secure and feature-rich access-control equipment designs. It includes an image-sensor interface, Ethernet networking capability, graphics and video decoding functions and a complete audio sub-system on top of a proven security platform.

Featuring an ARM® NEON™ engine, the SAMA5D2 series’ ARM Cortex®-A5 core runs at an operating frequency of 500MHz, providing throughput of 785 DMIPS. Its memory system includes a configurable 16- or 32-bit DDR interface controller, 16-bit external bus interface, QSPI Flash interface, ROM with secure and non-secure boot solution, 128kbytes of SRAM, and 128kbytes of L2 cache configurable as an SRAM extension.

The parts are ideal for applications requiring an entry-level MPU and an extended ambient temperature range of -40°C to 105°C. The new devices also provide an excellent upgrade option for designers currently using ARM926-based MPUs, and who require higher performance, low-power operation, higher security, DDR3 support and a smaller footprint.

The SAMA5D2 MPUs draw less than 200μA in Retention mode and in their new Back-up mode, in which the DDR memory continues to refresh itself, the current is just 50μA.

The robust security system in the new SAMA5D2 MPUs includes the ARM TrustZone® technology. The devices also feature:

  • secure boot
  • hardware cryptography
  • RSA/ECC capability
  • on-the-fly encryption/decryption on DDR and QSPI memories
  • tamper resistance
  • memory scrambling
  • independent watchdog
  • temperature, voltage and frequency monitoring
  • a unique ID

Development work on the SAMA5D2 series is underpinned by a comprehensive ecosystem of tools, firmware and libraries. This includes the SAMA5D2 Software Package, which provides ready-to-use projects for GCC and IAR EWARM compilers. Atmel also supplies the ARM GNU Toolchain 4.9.3, and Linux®, Android™ and Windows® operating system solutions optimised for the SAMA5D2 series.


  • 10/100 Ethernet MAC supporting IEEE 1588 functionality
  • 24-bit TFT LCD controller
  • Stereo Class-D amplifier
  • Digital microphone interface
  • One 12-bit image sensor controller with Raw Bayer support


The SAMA5D2 Xplained Ultra is a fast prototyping and evaluation platform for the Atmel | SMART SAMA5D2 series of microprocessors. The board includes eMMC and DDR3 memories and a rich set of connectivity options.

Orderable Part Number: ATSAMA5D2-XULT | Buy Now